Method for Operating an Internet-Protocol-Based Functional System and Associated Internet-Protocol-Based Functional System in a Vehicle

1. A method for operating an Internet-protocol-(IP-)based functional system in a vehicle with at least two system units which are separably connected to one another, the method comprising a first system unit of the at least two system units: respectively allocating a local IP address to each of the first system unit and a second system unit of the at least two system units to enable Internet-capable communication between the first system unit and the second system unit, transmitting data comprising a reproduction rule for carrying out a first function between the first system unit and the second system unit via an IP protocol stack, wherein the first system unit acts as a transmitting system unit and the second system unit acts as a receiving system unit, acting as a receiving system unit evaluating the data in the receiving system unit using the reproduction rule, using the reproduction rule to refer to a memory location of a memory associated with an execution program code to perform the first function at the receiving system unit, performing the first function by the receiving system unit using reference information in the reproduction rule, and specifying the reproduction rule for carrying out the first function in accordance with a standardized format, wherein the standardized format is specified such that a range of functions which is transferred using the reference information in the reproduction rule can run without previous system integration.

2. The method of claim 1 , wherein the first system unit is connected to the vehicle via a vehicle interface, and the first function accesses data stored in the vehicle.

3. The method of claim 2 , further comprising, storing, in the first system unit, an access profile; using the stored access profile to access criteria for further system units of the at least two system units with respect to the data stored in the vehicle, and checking by the first system unit whether one of the further system units is access-authorized with respect to certain data stored in the vehicle.

4. The method of claim 1 , further comprising assigning the local IP addresses by the first system unit.

5. The method of claim 1 , further comprising storing the execution program code belonging to the first function outside the vehicle, and accessing an execution program by the Internet-protocol-(IP)based functional system via a wireless data link.

6. The method of claim 1 , wherein several functions are executed simultaneously or successively in the Internet-protocol-(IP)based functional system, wherein the first system unit acts as the transmitting system unit and the second system unit acts as the receiving system unit for the first function, and wherein the first system unit acts as the receiving system unit and the second system unit acts as the transmitting system unit for a second function.

7. The method of claim 1 , wherein at least three system units are connected separably to one another in the Internet-protocol-(IP)based functional system, and one of the at least three system units forwards IP data packets between two other system units.

8. The method of claim 1 , wherein the reproduction rule for carrying out the first function is specified in accordance with Hyper Text Markup Language format.

9. The method of claim 1 , wherein the reproduction rule for carrying out the first function is specified in accordance with Hyper Text Markup Language 5 format.

10. An Internet-protocol-(IP-)based functional system in a vehicle, the system comprising: a first system unit of at least two system units and a second system unit of the at least two system units which are connected separably to one another; and a network configuration server to assign a local IP address to each of the first system unit and to the second system unit, wherein data comprising a reproduction rule for carrying out a first function can be transmitted between the first system unit and the second system unit via an IP protocol stack, wherein the first system units acts as a transmitting system unit and the second system unit acts as a receiving system unit, wherein the data is evaluated in the receiving system unit with the reproduction rule to refer to a memory location of a memory which is allocated to the execution program code of the first function to carry out the first function via the receiving system unit, wherein the reproduction rule for carrying out the first function is specified in accordance with a standardized format, and wherein the standardized format is specified such that a range of functions which is transferred using the reference information in the reproduction rule can run without previous system integration.

11. The functional system of claim 10 , wherein the functional system is an infotainment system with a base unit permanently connected in the vehicle and at least one releasably connected mobile terminal.